CN205102104U - Overcritical boiler - Google Patents
Overcritical boiler Download PDFInfo
- Publication number
- CN205102104U CN205102104U CN201520826381.9U CN201520826381U CN205102104U CN 205102104 U CN205102104 U CN 205102104U CN 201520826381 U CN201520826381 U CN 201520826381U CN 205102104 U CN205102104 U CN 205102104U
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- China
- Prior art keywords
- superheater
- burner hearth
- boiler
- furnace
- flue
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses an overcritical boiler, including furnace (1), combustor (2), platen superheater (3), finishing superheater (4), final stage re -heater (5), cold reheat ware (9), low temperature superheater (10) and economizer (11), be provided with on the outer wall of furnace (1) combustor (2), platen superheater (3) arrange in the upper portion of furnace (1), finishing superheater (4) are located flame angle top is rolled over in furnace (1), final stage re -heater (5) arrange in furnace (1) top, cold reheat ware (9) are arranged in the flue anterior segment of boiler (1), the back end of flue is provided with low temperature superheater (10), the export of flue is provided with economizer (11). The utility model discloses it is energy -conserving.
Description
Technical field
The utility model relates to a kind of boiler, particularly a kind of super critical boiler.
Background technology
Working medium in boiler is all water, and the critical pressure of water is: 22.115MPa374.15 DEG C; When this pressure and temperature, water and steam transforms the latent heat of vaporization and equals zero, and there is not two-phase section, namely water becomes steam is continuous print, and carries out with single-phase form, just cries the critical point of water, in stove, power pressure is just subcritical boiler lower than this pressure, and being greater than this pressure is exactly super critical boiler.Overcritical, ultra supercritical coal-fired unit has the effect of energy-conservation and environmental protect significantly, and extra-supercritical unit is compared with supercritical unit, and the thermal efficiency will improve 1.2%, within 1 year, just can save 6000 tons of fat coals.Following construction of fire and electricity will mainly develop overcritical (SC) and ultra supercritical (USC) fired power generating unit of high efficiency high parameter, and they have obtained investigation and application widely in developed country.
Utility model content
For the defect of prior art, the utility model provides a kind of super critical boiler.
A kind of super critical boiler, comprises burner hearth 1, burner 2, pendant superheater 3, finishing superheater 4, final reheater 5, low-temperature reheater 9, low temperature superheater 10 and economizer 11, the outer wall of described burner hearth 1 is provided with described burner 2; Described pendant superheater 3 is arranged in the top of described burner hearth 1, described finishing superheater 4 is positioned at above described burner hearth 1 furnace arch, furnace nose, described final reheater 5 is arranged in described burner hearth 1 top, described low-temperature reheater 9 is arranged in the flue leading portion of boiler 1, the back segment of described flue is provided with described low temperature superheater 10, and the outlet of described flue is provided with economizer 11.
Optionally, the steam-water separator 6 being arranged at boiler top and the dragveyer 12 be arranged at bottom described burner hearth 1 is also comprised.
Optionally, described burner hearth 1 is wrapped with water-cooling wall, and described water-cooling wall is that the evaporating heating surface be made up of many water pipes in parallel of burner hearth 1 surrounding that is laid in is formed.
Optionally, described pendant superheater 3 is arranged in upper furnace, has 30 tube panels along stove cross direction, and tube panel spacing is 690mm, and every sheet tube panel is bent by 28 parallel transistors and forms, and the diameter of pipe is φ 38mm.
The beneficial effects of the utility model are: the technology, between low-load period, turn down reheater side gas baffle, low low-temperature reheater side flue gas flow, reduce the heat exchange amount of reheated steam and flue gas, cigarette temperature fast response time, energy-conservation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model super critical boiler.
Detailed description of the invention
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in detail detailed description of the invention of the present utility model below in conjunction with accompanying drawing, make above-mentioned and other object of the present utility model, Characteristics and advantages will be more clear.Reference numeral identical in whole accompanying drawing indicates identical part.Deliberately do not draw accompanying drawing in proportion, focus on purport of the present utility model is shown.
As shown in Figure 1, super critical boiler of the present utility model comprises burner hearth 1, burner 2, pendant superheater 3, finishing superheater 4, final reheater 5, main vapor outlet 7, reheating vapor outlet 8, low-temperature reheater 9, low temperature superheater 10 and economizer 11, burner hearth 1 is the space of organizing fuel combustion in boiler, also claims combustion chamber.Burner hearth, except the converts chemical energy of fuel will being become the heat energy of combustion product, also carries the task of organizing burner hearth heat exchange.The outer wall of described burner hearth 1 is provided with burner 2, and burner 2 is for providing required fuel, air blast for boiler combustion.Pendant superheater 3 is arranged in the top of burner hearth 1, and finishing superheater 4 is positioned at above burner hearth 1 furnace arch, furnace nose; Final reheater is then arranged in burner hearth 1 top, and low-temperature reheater 9 is arranged in the flue leading portion of boiler 1, and flue back segment is provided with low temperature superheater 10, and flue outlet is provided with economizer 11.Also comprise the steam-water separator 6 being arranged at boiler top, bottom burner hearth 1, be provided with dragveyer 12, for removing slag.
This novel middle burner hearth 1 is outside equipped with water-cooling wall, and water-cooling wall is the evaporating heating surface be made up of many water pipes in parallel of burner hearth 1 surrounding that is laid in.Its Main Function is: the radiations heat energy absorbing thermal-flame and stove cigarette in burner hearth, makes the water vapor in water-cooling wall, produces saturated vapor; Reduce high temperature to the destruction of furnace wall, protection furnace wall; Augmentation of heat transfer, reduces boiler heating surface area, saves metal consumption; Effectively prevent furnace wall slagging scorification.Burner hearth 1 cross section is a breadth depth ratio is the rectangle of 1.42:1, furnace width 22.187m, degree of depth 15.632m.Become furnace hopper at burner hearth bottom absolute altitude 15.344m place front-back wall to the tilted 55 ° of dihedrals of stove, furnace hopper lower edge opening section (dark × wide) is 1400 × 22187mm.Water-cooling wall is made up of lower furnace portion spirally-wound tubes and upper vertical tube panel two parts, the working medium come by economizer exit introduces the forward and backward two water-cooling wall entrance headers of furnace bottom by a heavy caliber downcomer and tube connector, flows through furnace hopper successively and lower hearth Spiral Coil Waterwall enters middle mixing header.
Economizer 12 boiler feedwater is heated in boiler flue, and improve the heating surface of feed temperature, it absorbs the heat of low-temperature flue gas, reduces the exhaust gas temperature of flue gas, saves the energy, improve efficiency, and boiler economizer tube bank adopts seamless steel pipe in-line arrangement.Economizer is that continuous pipeloop can hydrophobic type, and water upwards flows, and flue gas flows downward.The water-cooling wall entrance header fed water before and after the inlet annular header of economizer is supplied to respectively.
Superheater is boiler heating surface parts saturated vapor being heated to specified overtemperature.This boiler superheater system comprises pendant superheater 3 and finishing superheater 4.Pendant superheater 3 is arranged in upper furnace, has 30 tube panels along stove cross direction, and tube panel spacing is 690mm.Every sheet tube panel is bent by 28 parallel transistors and forms, and the diameter of pipe is φ 38mm, and different according to the wall temperature of pipe, entrance material is SA-213T91, and outer race tube and outlet section adopt SA-213TP347H.Finishing superheater 4 is positioned at above furnace arch, furnace nose, and along stove cross direction arrangement totally 30 tube panels, tube panel spacing is 690mm.Every sheet pipe group is formed by 20 pipe coilings, and the diameter of pipe is φ 44.5mm, and material is SA-213T91.After steam is heated to nominal parameter in finishing superheater, enter steam turbine through outlet header and main steam conduit.
Reheater, reheater is the boiler heating part steam discharge of steam turbine high-pressure cylinder being reheated uniform temperature.Its effect reduces the steam moisture of steam turbine afterbody and improves the economy of unit further.By heat transfer type, reheater can be divided into convection current reheater and two kinds, radiation reheater.Adopt reheater object to be reduce the humidity of a few grade blade in steam turbine end and improve the heat-economy of unit, in subcritical pressure boiler unit, reheat steam temperature and overheating steam temperature adopt identical temperature.And at supercritical pressure generating units, if reheat steam temperature adopts value identical with overheating steam temperature, then the humidity of a few grade blade in steam turbine end is still larger, then need to adopt higher reheat steam temperature, to reduce the humidity of its last a few grade blade.What this Boiler Reheated-steam Temperature adopted is 569 DEG C.Low-temperature reheater 9 is arranged in the anterior flue of afterbody twin flue and is made up of 3 sections of horizontal tube groups and 1 section of vertical tube group.1,2,3 sections of horizontal reheaters are 115mm along the wide layout of stove 190, transverse pitch, every sheet pipe group is coiled into by 5 pipes, 1, the pipe specification of 2 sections is φ 63.5 × 4.3mm, material is SA-210C, and the pipe specification of 3 sections is φ 57 × 4.3mm, material is SA-209T1a.The sheet number of vertical low temperature reheater becomes 95, and transverse pitch is 230mm, and every sheet pipe group is made up of 10 pipes, and pipe specification is φ 57 × 4.3mm, material is SA-213T22.
Set forth a lot of detail in the above description so that fully understand the utility model.But above description is only preferred embodiment of the present utility model, the utility model can be much different from alternate manner described here to implement, and therefore the utility model is not by the disclosed concrete restriction implemented above.Any those skilled in the art are not departing under technical solutions of the utility model ambit simultaneously, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or be revised as the Equivalent embodiments of equivalent variations.Every content not departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solutions of the utility model protection.
Claims (4)
1. a super critical boiler, it is characterized in that comprising burner hearth (1), burner (2), pendant superheater (3), finishing superheater (4), final reheater (5), low-temperature reheater (9), low temperature superheater (10) and economizer (11), the outer wall of described burner hearth (1) is provided with described burner (2); Described pendant superheater (3) is arranged in the top of described burner hearth (1), described finishing superheater (4) is positioned at above described burner hearth (1) furnace arch, furnace nose, described final reheater (5) is arranged in described burner hearth (1) top, described low-temperature reheater (9) is arranged in the flue leading portion of boiler (1), the back segment of described flue is provided with described low temperature superheater (10), and the outlet of described flue is provided with economizer (11).
2. super critical boiler according to claim 1, characterized by further comprising the steam-water separator (6) being arranged at boiler top and the dragveyer (12) being arranged at described burner hearth (1) bottom.
3. super critical boiler according to claim 1, is characterized in that described burner hearth (1) is wrapped with water-cooling wall, and described water-cooling wall is that the evaporating heating surface be made up of many water pipes in parallel of the burner hearth that is laid in (1) surrounding is formed.
4. super critical boiler according to claim 1, it is characterized in that described pendant superheater (3) is arranged in upper furnace, have 30 tube panels along stove cross direction, tube panel spacing is 690mm, every sheet tube panel is bent by 28 parallel transistors and forms, and the diameter of pipe is φ 38mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520826381.9U CN205102104U (en) | 2015-10-21 | 2015-10-21 | Overcritical boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520826381.9U CN205102104U (en) | 2015-10-21 | 2015-10-21 | Overcritical boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205102104U true CN205102104U (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520826381.9U Expired - Fee Related CN205102104U (en) | 2015-10-21 | 2015-10-21 | Overcritical boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN205102104U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489998A (en) * | 2017-09-28 | 2017-12-19 | 哈尔滨锅炉厂有限责任公司 | A kind of effect that can put forward Sub-critical Parameter grade is to the boiler of ultra supercritical parameter grade |
| CN109973977A (en) * | 2019-04-01 | 2019-07-05 | 哈尔滨锅炉厂有限责任公司 | The overcritical superhigh temperature coal base distributed energy Industrial Boiler of 50MW coal base |
| CN112097246A (en) * | 2020-09-25 | 2020-12-18 | 哈尔滨锅炉厂有限责任公司 | Convection reheater for ultra-high pressure boiler |
| CN112628709A (en) * | 2020-12-28 | 2021-04-09 | 东方电气集团东方锅炉股份有限公司 | Super (super) critical W-shaped flame boiler |
| CN114754345A (en) * | 2022-04-24 | 2022-07-15 | 西安热工研究院有限公司 | Boiler and thermal power generating unit with baffle plate assembly |
-
2015
- 2015-10-21 CN CN201520826381.9U patent/CN205102104U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489998A (en) * | 2017-09-28 | 2017-12-19 | 哈尔滨锅炉厂有限责任公司 | A kind of effect that can put forward Sub-critical Parameter grade is to the boiler of ultra supercritical parameter grade |
| CN109973977A (en) * | 2019-04-01 | 2019-07-05 | 哈尔滨锅炉厂有限责任公司 | The overcritical superhigh temperature coal base distributed energy Industrial Boiler of 50MW coal base |
| CN112097246A (en) * | 2020-09-25 | 2020-12-18 | 哈尔滨锅炉厂有限责任公司 | Convection reheater for ultra-high pressure boiler |
| CN112628709A (en) * | 2020-12-28 | 2021-04-09 | 东方电气集团东方锅炉股份有限公司 | Super (super) critical W-shaped flame boiler |
| CN114754345A (en) * | 2022-04-24 | 2022-07-15 | 西安热工研究院有限公司 | Boiler and thermal power generating unit with baffle plate assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20181021 |
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| CF01 | Termination of patent right due to non-payment of annual fee |